package cc.openhome;
import java.util.*;

public class Messages2 {
    public static void main(String[] args) {
        Map<String, String> messages = new TreeMap<>();
        messages.put("Justin", "ABC");
        messages.put("Monica", "ZXC");
        messages.put("Irene", "QWE");
        System.out.println(messages);
    }
}
